Magazine for weft-replenishing looms



n; CROMPTON, w. E. WOODMAN, AND R. J. ADAMS.

MAGAZINE FOR WEFT REPLENISHING LOOMS.

APPLICATION FILED MAY 26, I919.

Patented Sept. 26, 1922.

-2 swam-sneer 1.

, AND R. I. ADAMS.

'R. CROMPTON, W. E- 'WOODMAN MAGAZINE FOR W EFT REPLENISHING LOOMS.

APPLICATION FILED MAY 26. I919.

Patented Sept. 26, 1922.

2 SHEETS-SHEET 2.

Patented Sept. 26, 1922.

warren stares PATENT orrice.

RANDOLPH CROMPTON, WILLIAM E. WOODMAN, AND ROBERT J. ADA.MS, OF WORCES- rnn, MASSACHUSETTS; 'ron.

SAID WOODMAN AND ADAMS ASSIGNORS TO SAJDCROMP MAGAZINE FOR wnrr-nninnnisnme LOOMS.

Application filed May 26, 1919. Serial No. 299,977.

To all whom it may concern .1

Be it known that we, RANDOLPH CRoMP- TON, NILIJAM E. WOODMAN, and RoBnR'r'J. ADAMS, citizens of the United States, resid-' ing at lVorcester, in the county of VVorcester and Commonwealth of Massachusetts, have invented a new and useful Improve ment in a Magazine for Weft-Replenishing Looms, of which the following, together with the accompanying drawings, is a specification. 1

Our invention relates to hoppersormagazines for automatic wett replenishing looms, and it has for its object to providean improved form of magazine embodying certain novel features not heretofore provided in looms of the above described type. V I

In automatic weft replenishin looms, a series of filling carriers, such as bobbins or cops are carried in a rotary hopper or magazine, andsuitable actuating mechanism .is provided to automatically eject a filling carrier from the shuttle and-to insert a fresh filling carrier therein upon the detection of filling absence by the filling detecting de vices. In placing the bobbinsorcops in the magazine it is most essential'that each filling carrier should be held accurately inposition with respect to the shuttle, and furthermore, that the filling carrier should be easily de tached from the magazine when itis'neces sary to insert it inthe shuttle.

By our invention we provide an improved form of holder for the small ends of the bobbins or cops whereby the filling carriers are held in proper position and at the same time may be readily detached from the holder; In addition our improved form ofholder is capable of being quickly and easily replaced in the magazine by reason of the fact that it is held in position without the use of rivets or screws, or otherzperm'anent fastening devices. We also provide a guard'ring l for preventing accidental displacement of the filling carriers. p

The magazines of weft replenishing looms as heretofore constructed, have usually comprised an integrally butt ends ofthe filling cast on ratchet teeth adapted to be engaged by suitable pawl members for advancing the magazine after eachfilling replenishment.

By our. inventiom'it" is proposed to irnvention.

cast sleeve and end plate prove the above described arrangement by casting thesleeve and ratchet separate from thebutt-end plate, and chilling the metal of the teeth in order to increase the wearing qualities thereof. This latter" stephas been found to be impracticable with'the -former integral constructionowing to the fact that the plateis of considerable larger diameter than the ratchet teeth, thus making it extremely diflicult to chillhthe teeth without spoiling the portions of the casting beyond the periphery of the teeth. vide a novel form of feeding pawl for on aging theratchet teeth and advancing the hopper after filling replenishment.

In the accompanying drawings,

Figure l is a tr'ar'isverse sectional view of aportion of a magazine embodying our in Figure'Q is a view in front elevation of a portion of the parts shown in Fig. 1." Figures 3 and 4 are dQ tflll VlGWS showing a portion of the parts shown in'FigJQ.

' Figures 5 and 6 are side elevation respectively, showing a modifi'a cation of the filling carrier 'hol der shown in Fig. 2. Q I

Figure 7 is an enlarged sectional viev.

along'the line 7 7, Fig; 1.

Figure 8 isa view in side elevation of a portion ott'the parts'shown in'Fig. 7. i

Similar reference characters refer to 'simi-' lar parts in the different gures. t

Referring to Fig.1,a not shown, and is provided with a longitudi-, nally extending stud 2 upon which thehop= per or magazine is rotatably mounted. A

We also pro 7 views in i'ront and opper plate 1' is supported upon thebreast beam of the loom,

sleeve?) surrounding the stud 2 is provided at one end with a flange dhaving' aplu rality of ratchet teeth 5 formed on the outer periphery thereof. The sleeve 3 the flange 4, and theteeth 5 are preferablytormed in a single casting and the outer peripheral portion'of the'flange/l is chilledso that the teeth 5 will'presentwearresisting working surfaces. A; butt-endpl'ateG is securedto 'thefiangee' by m'eanslot set screws or rivets 7, and is located within a rim Sprovided'on A small-end plate 9' is the: ho per late 1. p

p p ral'hub portion 10 and provided with a cen is secured v 3 by means of a set screw 11. As best shown in Fig.2, the plate Qis provided with a cen,

upon the other end of the sleeve tral web section 12 surrounding the hub 10, and with a plurality of arms 18 radiating therefrom for supporting a rim 14. The web section 12 is provided with a plurality of substantially circular depressions or recesses 15 that are located at the base of the spaces 16 between the arms 18.

A plurality of smallend holders 17 are arranged in the spaces 16 with their end portions extending into the seats 15. Each holder 17 is preferably formed from a single piece of wire and comprises a loop portion 18 that is located outside of the periphery of the rim 14. The sides of the loop portion 18 come together at the top and are then bent outwardly and downwardly to form legs 19 for supporting the holder. The legs 19 are bent outwardly in opposite directions at their ends to conform to the seat 15, as shown at 20. A clamping ring 21 is provided with a plurality of substantially circular projections 22 that are respectively adapted to be received in the seats15 and to occupy the space not taken up by the bent out portions 20, as shown in Figs. 3 and 4. The recesses 15 and the projections 22 are so proportioned that the legs 19 are clamped tightly in position when the clamping ring 21 is secured to the plate 9 by any suitable means.

A plurality of filling carriers 23, shown here as cops, are supported at their buttends in depressions 24 provided in the buttend plate 6 and with their small-ends or tips 25 respectively seated in the loops 18 of the tip holders 17. In placing a cop 23 in the hopper, the butt-end is first inserted in a depression 24 and the tip 25 is then forced downward between the converging side portions of the loop 18 until it is seated at the bottom of the loop. The cop is then rigidly supported at its butt-end while its tip is yieldingly held in position and is substantially inclosed by an inherently resilient member, so that it may be readily removed from the hopper when engaged by the transferrer, in which case the tip 25 forces the sides of the loop 18 apart.

A modification in the form of the smallend holder is shown in Figs. 5 and 6 in which the small-end plate '26 is provided with an annular groove 27 and a plurality of slots 28 extending across the radial arms 29. A holder 30 is formed with a loop portion 31, the bottom of which is flared outwardly, as shown at 32, to receive the smallend of a bobbin, the sides of the loop .31 being spaced apart a distance somewhat less than the diameter of the small-end of a bobbin. The ends ofthe loop 31 are bent downwardly to form legs 33 that are located in the groove The legs 38 are bent upwardly at the bottom of the groove 27 into parallel relation with the adjacent arms 29 alnd are provided at {their ends with hook portions 34 that are received in the slots 28 on opposite sides of the loop 81. The legs 33 are held in the groove 27 by means of a clamping rin 35. The modified tip holders 80 are thus a aptedto receive the small ends of bobbins and to yieldingly maintain them in osition in the same manner as described wit reference to the .tip holders 17. i

The small-end plate 9 is further provided with a plurality of arms 36 projecting radially outwardly from the rim 14. The arms 36 are provided at their ends with notches 37 Within which is seated a ring 38, preferably formed of resilient material, such as wire. The function of the ring 38 is to provide a guard for preventing external objects from coming into contact with the small ends of the filling carriers, and thereby disarranging them. "The ring 38 is therefore made somewhat resilient so that it is capable of yielding upon receiving a heavy blow and the notches 37 are formed with their inner walls cut down, as shown at 39, to allow the ring 38'to spring out of the notches 37, if. suiiicient force is applied thereto.

eferring now to Figs. 7 and 8, a transfer arm 40 is pivotally mounted on a transfer stud 41 that is carried by the hopper plate 1. A coiled spring 42 surrounding .the stud 41, is secured at one end to t he'stud 41 and at its other end to a hub 43, of the transfer arm. The spring 42 tends to move the trans fer arm 40 in the direction of the ratchet teeth 5. A feeding pawl 44 is pivotally mounted on a pivot pin 45 at the free ,end of the transfer arm 40, and is yieldingly held against a stop arm 46 on the arm 40 by means of a spring 47 secured at its ends to the arm 40 and to a lug 48 provided on the pawl 44. The pawl 44 is provided With a tooth 49 that is adapted to engage the ratchet teeth' 5. A stop pawl 50 is pivotally mounted at the point 51 upon the hopper plate 1 and is provided with a tooth 52 "for engaging .the ratchet teeth 5. The stop pawl 50 tends to turn about its pivot 51 under the force of gravity, in the direction of the ratchet, so that the magazine is normally prevented from turning by the engagement of the tooth 52 with the teeth Upon the operation of the filling absence detecting devices, the transfer arm 40 is moved downwardly in the direction of the filling carriers 23 and removes one of the carriers to-replenish the shuttle. As the transfer arm 40 moves downwardly the feeding pawl 44 turns about its pivot against the action ofthe spring 47 and the tooth 49 slips over the ratchet teeth. .On the upward motion of the transfer arm the feeding pawl tooth 49 engages the next lowest tooth 5 of the ratchet and turns it through a distanfce of one tooth, the upward thrust of the transfer. arm 40 being sufficient to move the top pawl 50 upwa dly about its pivotand to allow the tooth 52 to slip one ratchet tooth 5. The stop pawl 50 always preventsthe hopper from turning in a counterclockwise direction to feed backward.

From the foregoing it is apparent that the arrangement of the ratchet and pawl devices is extremely simple and that the action. of the feeding pawl and of the stop pawl in advancing the hopper the distance of one tooth after filling replenishment and in preventing backward movement is obtained without the use of any auxiliary devices, such as have been heretofore employed.

It is also apparent that the several featurcs of our improved hopper or magazine can be applied either separately or collectively to looms already in use with but a slight rearrangement of the hopper.

We claim,

1. In a hopper or magazine for automatic looms, a small-end plate and a clamping member, and a wire member for supporting the small end of a filling carrier, the said small-end plate and the said member being provided with coacting recessed and projecting portions for holding the said member in position. i

2. In a hopper or magazine for automatic looms, a small-end plate provided with a recessed portion and a resilient support for the small end of a filling carrier provided with a projection located in said recessed portion, and a member for clamping said portions together.

3. In a hopper or magazine for automatic looms, a small-end plate provided with a recess, a resilient support for the small end of a filling carrier provided with a projection conforming to said recess and partially occupying the same, and a clamping member rovided with a projection filling said recess 'or retaining said support in position.

4. In a hopper or magazine for an automatic loom, a resilient member provided with a loop for seating the small end of a filling carrier, the top portions of said loop being closer together than other portions thereof, to prevent the displacement of the end of the filling carrier.

5. In a hopper or magazine for automatic looms, a small end plate, a plurality of annularly arranged members for supporting the small ends of filling. carriers beyond the periphery of-said plate, and a readily miseated guard member carried adj acent to the said supporting members to prevent accidental displacement of filling carriers.

6. In a hopper or magazine for automatic looms, a small end plate, a plurality of annularly arranged members for supporting the small ends of filling carriers beyond the periphery of said plate, and a yieldable guard ring carried beyond and adjacent to the said supporting members.

7. In a hopper or magazine for automatic looms, a plurality of annularly arranged filling carriers, a small-end plate provided with a plurality of resilient members for bodily supporting the small ends of the filling carriers beyond the periphery of said plate, and an annular guard member carried adjacent to said supporting members, the said guard member being adapted to be readily unseated.

8. In a hopper or magazine for an automatic loom, a resilient member provided with an elongated loop for seating the small end of a filling carrier, the side portions of the loop converging to prevent the displacement of the end of the filling carrier.

9. In a hopper or magazine for an automatic loom, a wire form providing a loop for supporting the small end of a filling carrier, the sides of the loop being contracted to prevent the free insertion or withdrawal of the end of the filling carrier therefrom.

10. In a hopper or magazine for an automatic loom, a wire form providing a loopfor seating the small end of a filling carrier, the sides of the loop being yielding to permit forcible entrance of the end of a filling carrier, and being close enough together to prevent displacement of a carrier after it is received in the loop.

11. In a hopper or magazine for an automatic loom, a wire form for supporting the small-end of a filling carrier and comprising a shank terminating in a bent over loop, the sides of which are contracted to prevent the displacement of the end of a filling carrier.

Dated this seventeenth day of May, 1919.

RANDOLPH CROMPTON. WILLIAM E. WOODMAN. ROBERT J. ADAMS.

Witnesses:

NELLIE WHALEN, PENEIDPE CoMBEREAoH. 

